公开(公告)号：WO2013075623A1

公开(公告)日：2013-05-30

申请号：PCT/CN2012/084942

申请日：2012-11-21

Applicant: SHENZHEN BYD AUTO R&D COMPANY LIMITED ,  BYD COMPANY LIMITED

Inventor： CHEN, Shichao ,  LIANG, Shulin ,  TANG, Xiaohua

IPC: H02M3/315

CPC classification number: H02M3/33584

Abstract: A DC/DC bidirectional converter comprises: a first transformer (Tl ) with a variable turn ratio, a second transformer (T2) with a variable turn ratio, a first switch (Kl), a second switch (K2), a high voltage control module (1) and a low voltage control module (2). The first switch (Kl) and the second switch (K2) are configured to switch on alternately to control the turn ratio of the first transformer (Tl) and the turn ratio of the second transformer (T2), in which a secondary coil of the first transformer (Tl) and a second coil of the second transformer (T2) are connected via the first switch (Kl) or the second switch (K2). The high voltage control module (1) is used for high voltage AC/DC conversion and the low voltage control module (2) is used for low voltage AC/DC conversion. The DC/DC bidirectional converter has advantages of small size, light weight and low cost.

Abstract translation: DC / DC双向转换器包括：具有可变匝数比的第一变压器（T1），具有可变匝数比的第二变压器（T2），第一开关（K1），第二开关（K2），高压控制 模块（1）和低压控制模块（2）。 第一开关（K1）和第二开关（K2）被配置为交替地接通以控制第一变压器（T1）的匝数比和第二变压器（T2）的匝数比，其中， 第一变压器（T1）和第二变压器（T2）的第二线圈经由第一开关（K1）或第二开关（K2）连接。 高压控制模块（1）用于高压交流/直流转换，低压控制模块（2）用于低压交流/直流转换。 DC / DC双向转换器具有体积小，重量轻，成本低的优点。